use react helmet to manipulate scripts and styles programatically

commafeed-client/src/App.tsx

@@ -1,7 +1,6 @@
 import { i18n } from "@lingui/core"
 import { I18nProvider } from "@lingui/react"
 import { MantineProvider } from "@mantine/core"
-import { useDidUpdate } from "@mantine/hooks"
 import { ModalsProvider } from "@mantine/modals"
 import { Notifications } from "@mantine/notifications"
 import { Constants } from "app/constants"
@@ -29,8 +28,9 @@ import { LoginPage } from "pages/auth/LoginPage"
 import { PasswordRecoveryPage } from "pages/auth/PasswordRecoveryPage"
 import { RegistrationPage } from "pages/auth/RegistrationPage"
 import { WelcomePage } from "pages/WelcomePage"
-import React, { useEffect, useRef } from "react"
+import React, { useEffect } from "react"
 import ReactGA from "react-ga4"
+import { Helmet } from "react-helmet"
 import { HashRouter, Navigate, Route, Routes, useLocation, useNavigate } from "react-router-dom"
 import Tinycon from "tinycon"
 
@@ -166,38 +166,13 @@ function BrowserExtensionBadgeUnreadCountHandler() {
     return null
 }
 
-function CustomJs() {
-    const scriptLoaded = useRef(false)
-
-    // useDidUpdate is used instead of useEffect because we want to skip the first render
-    // the first render is the render of react-router, the routes are actually loaded in a second render
-    // we want the script to be executed when the first route is done loading
-    useDidUpdate(() => {
-        if (scriptLoaded.current) {
-            return
-        }
-
-        const script = document.createElement("script")
-        script.src = "custom_js.js"
-        script.async = true
-        document.body.appendChild(script)
-
-        scriptLoaded.current = true
-    })
-
-    return null
-}
-
-function CustomCss() {
-    useEffect(() => {
-        const link = document.createElement("link")
-        link.rel = "stylesheet"
-        link.type = "text/css"
-        link.href = "custom_css.css"
-        document.head.appendChild(link)
-    }, [])
-
-    return null
+function CustomCode() {
+    return (
+        <Helmet>
+            <link rel="stylesheet" type="text/css" href="custom_css.css" />
+            <script type="text/javascript" src="custom_js.js" />
+        </Helmet>
+    )
 }
 
 export function App() {
@@ -217,8 +192,7 @@ export function App() {
                     <GoogleAnalyticsHandler />
                     <RedirectHandler />
                     <AppRoutes />
-                    <CustomJs />
-                    <CustomCss />
+                    <CustomCode />
                 </HashRouter>
             </>
         </Providers>